This setting allows you to choose a specific credit card issuer (Amex, Diners Club International, MasterCard or Visa) for the generated credit card. By using the default value 'Any' the generated card will get a random issuer.
This setting controls the maximum possible validity of the generated card specified in years. The default value is five years, which means that the card will get a random validity in the range from the current month up to five years into the future.
This checkbox specifies wheter the generated credit card number should be valid or not, the default is checked for a valid number. If unchecked the generated number is guaranteed to not validate according to the the Luhn algorithm, the last digit will be a random number (0-9) that is not the correct check digit.
This checkbox specifies wheter the validity of the generated credit card should be in the future or not, the default is checked for an expiry in the future. If unchecked the expiry date will be between last month and up to as many years ago as specified for the setting 'Max Valid'.
When pressing the 'Generate' button a random credit card will be generated according to the current settings.
When pressing the 'Random' button a random credit card will be generated just as when pressing 'Generate' with the difference that all the settings will be randomly decided.
The long number (14-16 digits) is the randomly generated credit card number. Below that is the expiry date (mm/yy). In the bottom right corner of the card the logo of the issuer is displayed. Every generated card also get a random color that will help you identify it in the history.
If this checkbox is checked any selection made will be automatically copied to the clipboard. When clicking on the the card number the whole number will automatically be selected (and put in the clipboard if the checkbox is checked) to make copying it as easy as possible.
To the right of the credit card the history of generated credit cards is displayed, this allows you to easily go back to previously generated credit cards if needed. Click on a card in the history to load it in the main credit card view. The history will contain up to 25 cards, when full the oldest card in the history will be discarded to make room for the one generated last. The latest card will always be displayed at the top and the oldest at the bottom.
Every item in the history will have the logo of the card issuer on the left with the color of the card displayed below the logo. To the right of the issuer logo the last four digits of the credit card number is displayed above the expiry date of the card. Both the number and expiry have a small box to the right that shows if it is a valid number/expiry or not; Green indicates a valid value while red indicates an invalid value.